<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区-->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <!--角色列表区-->
      <el-table :data="rolesList" stripe style="width: 100%" border>
        <!--展开列-->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bd-bottom', i1 === 0 ? 'bd-top' :'','vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!--一级权限-->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--二，三级权限-->
              <el-col :span="19">
                <el-row
                  :class="[i2 !== 0 ? 'bd-top' :'', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      :class="[i3 !== 0 ? 'bd-top' :'']"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!--索引列-->
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleDesc" label="角色描述" width="180"></el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!--删除按钮-->
            <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeRoleById(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!--分配角色权限按钮-->
            <el-tooltip effect="dark" content="分配权限" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="showSetRightDialog(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!--添加角色对话框-->
    <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!--内容主体-->
      <el-form :model="addForm" :rules="addFormrules" ref="addFormRef" label-width="70px">
        <el-form-item label="角色名称" prop="roleName" label-width="90px">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc" label-width="90px">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!--修改角色信息对话框-->
    <el-dialog title="修改角色" :visible.sync="editDialogVisible" width="50%">
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
        @close="editDialogClosed"
      >
        <el-form-item label="角色名" prop="email">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="mobile">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!--分配权限对话框-->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!--树形控件-->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Roles',
  data() {
    return {
      // 角色列表数据
      rolesList: [],
      // 权限列表数据
      rightsList: [],
      // 树形控件属性绑定对象
      treeProps: {
        children: 'children',
        label: 'authName'
      },
      // 默认选中的节点Id值数组
      defKeys: [],
      // 要分配权限的角色id
      roleId: '',
      // 控制添加角色对话框的显示和隐藏
      addDialogVisible: false,
      // 添加角色的表单数据
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      // 添加角色的表单验证
      addFormrules: {
        roleName: [
          { required: true, message: '请输入角色名', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入描述信息', trigger: 'blur' }
        ]
      },
      // 控制修改角色对话框的显示和隐藏
      editDialogVisible: false,
      // 修改角色的表单数据
      editForm: {},
      // 修改角色表单的验证规则
      editFormRules: {
        roleName: [
          { required: true, message: '请输入角色名', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入描述信息', trigger: 'blur' }
        ]
      },
      setRightDialogVisible: false
    }
  },
  created() {
    // 获取角色列表数据
    this.getRoleList()
  },
  methods: {
    // 获取角色列表
    async getRoleList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
    },
    // 删除角色权限
    removeRightById(role, rightId) {
      this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(
            `roles/${role.id}/rights/${rightId}`
          )
          // console.log(res)
          if (res.meta.status !== 200) {
            return this.$message.error('删除失败')
          }
          // this.getRoleList()
          role.children = res.data
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
    },
    // 编辑角色信息查询对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询角色信息失败')
      }
      this.editForm = res.data
      // console.log(this.editForm)
      this.editDialogVisible = true
    },
    // 监听修改角色信息对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改角色信息并提交
    editRoleInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 修改用户网络请求
        const { data: res } = await this.$http.put(
          'roles/' + this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc
          }
        )
        console.log(res)
        if (res.meta.status !== 200) {
          this.$message.error('修改角色失败')
        }
        // 隐藏修改角色对话框
        this.editDialogVisible = false
        // 刷新角色列表
        this.getRoleList()
        this.$message.success('修改角色成功')
      })
    },
    // 删除角色
    removeRoleById(id) {
      this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(async () => {
          const { data: res } = await this.$http.delete('roles/' + id)
          if (res.meta.status !== 200) {
            return this.$message.error('删除失败')
          }
          this.$message.success('删除成功')
          this.getRoleList()
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
    },
    // 监听添加角色对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加角色
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 添加用户网络请求
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 隐藏添加用户对话框
        this.addDialogVisible = false
        // 刷新用户列表
        this.getRoleList()
      })
    },
    // 展示角色权限对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('查询权限信息失败')
      }
      this.rightsList = res.data
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    // 递归获取三级权限的id，并保存到defkeys数组中
    getLeafKeys(node, arr) {
      // 三级节点 保存id
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = []
    },
    // 为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')

      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, {
        rids: idStr
      })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRoleList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style scoped>
.el-tag {
  margin: 7px;
}
.bd-top {
  border-top: 1px solid #eee;
}
.bd-bottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
